package com.zheng.provider.service;


import com.zheng.RpcDecoder;
import com.zheng.provider.handler.UserServiceHandler;
import com.zheng.request.RpcRequest;
import com.zheng.serializer.JSONSerializer;
import com.zheng.service.UserService;
import io.netty.bootstrap.ServerBootstrap;
import io.netty.channel.ChannelInitializer;
import io.netty.channel.ChannelPipeline;
import io.netty.channel.nio.NioEventLoopGroup;
import io.netty.channel.socket.nio.NioServerSocketChannel;
import io.netty.channel.socket.nio.NioSocketChannel;
import io.netty.handler.codec.string.StringEncoder;
import org.springframework.stereotype.Service;

@Service(value = "UserService")
public class UserServiceImpl implements UserService {
    @Override
    public String sayHello(String word) {
        System.out.println("RPC远程调用参数为:"+word);
        return "success";
    }

    //启动服务器
    public static void startServer(String hostName,int port) throws InterruptedException {
        //1.创建两个线程池对象
        NioEventLoopGroup bossGroup=new NioEventLoopGroup();
        NioEventLoopGroup workGroup=new NioEventLoopGroup();
        //2.创建服务端启动引导对象
        ServerBootstrap serverBootstrap=new ServerBootstrap();
        //配置启动引导对象
        serverBootstrap.group(bossGroup,workGroup)
                //设置通道为NIO
                .channel(NioServerSocketChannel.class)
                //创建监听channel
                .childHandler(new ChannelInitializer<NioSocketChannel>(){

                    @Override
                    protected void initChannel(NioSocketChannel nioSocketChannel) throws Exception {
                        //获取管道对象
                        ChannelPipeline pipeline=nioSocketChannel.pipeline();
                        //给管道对象pipeline设置编码
                        pipeline.addLast(new StringEncoder());
                        pipeline.addLast(new RpcDecoder(RpcRequest.class,new JSONSerializer()));
                        //把我们自顶一个ChannelHander添加到通道中
                        pipeline.addLast(new UserServiceHandler());
                    }
                });
        //4.绑定端口
        serverBootstrap.bind(hostName,port).sync();
    }
}
